You are Looking at a Patagonia Jacket. Grades at 7.5/10,good shape, normal wear.   Tagged a size Small may fit size Medium(Depending on how tight/loose you wear your clothes)....Read Measurements(compare them to a piece you own and you will get an idea of how it might fit)....My actual measurements are as follows.  Top to bottom,27".  Across the chest, from pit to pit,25".  Underarm seam to end of sleeve,22"